 ## Statistics Lab 2 - Measures of Center and Spread

Hi,

Today you will:

1. Open the spreadsheet you created during the last lab.
On a clean page begin today's work.

If you can not find the last lab's spreadsheet, download the original spreadsheet, Lab 1, and save it by naming it with your first and last name AND THE NUMBER 2.

Before beginning, you may wish to change the color of the entire worksheet page.

To do this, click on the cell above row 1, to the left of column A, and then click on the color of your choice.

Type your name, "Lab 2 - Statistical Center and Spread," and the date on the top of the worksheet.

Stay within the first K columns as you complete your work.

Double-click on the tab at the bottom of today's lab's worksheet and label it "lab2 nov4."

2. Copy graphics from a web page to your spreadsheet and take notes.

 terms:      formulas:   Right click on each picture above, in turn. Copy it. Paste it onto the spreadsheet using Ctrl + V.

Once it is there you may need to change the size so it fits well with the size and font of the text you type.

Below each symbol for a statistical term, type the word for the term.

Just organize the formulas as you wish to have clean, clear notes.

3. Make a table that computes a mean and standard deviation the long way.

You will duplicate the table and formula cells as we did in class (see below) .  You are really working on 2 tasks: [1.] compute the mean by paper and pencil in table form, [2.] compute the standard deviation by paper and pencil in table form.

First set up and complete the table.

Duplicate the table we completed in class. You will need to put 6 pieces of data in the table and will need rows to compute below the table of entries.

Study for the test and make use of your class notes in order to create the table and self-computing cells.

4. Make cells which compute a mean and standard deviation given raw data.

Next, label and create self-computing cells as we did in class.
[1.] create and label a cell to compute the mean the 6 numbers in the table above by using a spreadsheet formula,
[2.] create and label a cell to compute the standard deviation of the 6 numbers in the table above by using a spreadsheet formula. See notes.

5. Create a statistical number line using Excel formulas you write.
If you enter the mean and standard deviation on this page, the page will compute the scale values, when you press each button.

mean, :       standard deviation, s: You may paste the picture of the frequency distribution and number line on your spreadsheet.

Use the value in the cell for the self-computing mean and self-computing standard deviation you created in part 4.   You must create 7 self-computing cells to create the scale.

If you include the picture, and stretch it, your work might look like this.          © A. Azzolino November 4, 2009 www.mathnstuff.com/math/spoken/here/2class/90/fmlab2.htm